Hang on boot with 4.9-STABLE

[Kevin Oberman]

> Date: Fri, 21 Nov 2003 17:29:14 -0500
> From: Peter Radcliffe <pir at pir.net>
> Sender: owner-freebsd-stable at freebsd.org
> 
> Peter Radcliffe <pir at pir.net> probably said:
> > I've limited the time of the problem being introduced to between
> > date=2003.10.10.05.00.00 and date=2003.10.15.05.00.00 and am working
> > on finding a more exact range.
> 
> That was a typo, I meant between 2003.10.01.05.00.00 and 2003.10.15.05.00.00.
> 
> *default date=2003.10.07.18.00.00 -- boots and works
> *default date=2003.10.08.04.00.00 -- gives me a page fault at apm init
> 
> The only change between them is src/sys/i386/i386/pmap.c;
> 
>   http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/pmap.c.diff?only_with_tag=RELENG_4&r1=text&tr1=1.250.2.22&r2=text&tr2=1.250.2.23
> 
> *default date=2003.10.16.04.00.00 -- page fault
> *default date=2003.10.17.09.00.00 -- hard hang at apm init
> 
> The change between them is src/sys/i386/i386/locore.s
> 
>   http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/locore.s.diff?r1=1.132.2.12&r2=1.132.2.13&only_with_tag=RELENG_4

Guess I should have read on before my last message. Looks like the fix
for the APM crash is causing your system to hang. I am not seeing this
on my system, although I was seeing the crash prior to 10/16. 

You might want to drop Peter (peter@) a note. Maybe he can figure
something out. locore.s is WAY beyond the scope of my knowledge of i386
internals.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634